Train-stopping apparatus.



Patented Aug. 21, 191?. V

2 HEETS-SHEET 1.

3 u ue mto'o QXN/tneoom P. M. SPROULE.

TRAIN STOPPING APPARATUS. APPLlCATlON F lLED NOV 1 3. 1915.

1,287,968., Patentel Aug. 21,1917.

2 SHEETS-SHEET 2.

avwemtoz aie wwwzooaornncv srnourn, or cirRviLLE, ONTARIO,

CANADA.

, TRAIN-STOPPING APPARATUS,

memes.

To all whom it may concern.

Be it known that I, PERCY M. SPRouLE, a

. citizen of Canada, residing; at Cryville, in

' pin 5 has the opposite the Province of Ontario and Dominion of Canada, have invented new and useful Improvements in Train-Stopping Apparatus, of which the following is aspecification.

This invention relates to improvements in train stopping apparatus and has particular application to train stopping apparatus whereby the brakes of the train or car are applied in the event of such train or car entering the danger zone or passing a danger signal. r

In carrying out the present invention, it

is my object to simplify and improve the general construction of train stops of this class and to provide amechanlsmwhlch Wlll operate eificiently and positively under all conditions.

IVith the above and other ob ects 1n view,

the invention consists in the construction,

combination and arrangementof parts here inafter set forth in and falling within the scope of the claims.

In the accompanying drawings;

Figure 1 is a fragmentary cross sectional view through a trackway showing the track obstacle in side elevation.

Fig. 2 is a top plan view of the obstacle.

Fig. 3 is a cross sectional view through the same.

Fig. 4 is a fragmentary longitudinal sectional view through a locomotive showing the car carried mechanism in side elevation.

Fig. 5 is a diagrammatic view of the car carried mechanism.

eferring now to the drawings in detail,

'1 designates a trackway which, in the pres ent instance, is divided into blocks and located adjacent to the entrance to each block and controlling traffic thereinto is a semaphore 2. Suitably fastened to the upper surface of one of the ties at the entrance toeach block and spaced apart in parallelism are guides 3 arranged in a plane at right angles to the adjacent line of rails and slidably mounted within the guides 3 and projecting upwardly therefrom is a block f having the opposite sides thereof formed with grooves to receive the guides so that accidental displacement of the block from the guides is eliminated and the block maintained in a true sliding position. A pivot extremities thereof secured to the confronting faces of the Specification of Letters Patent.

Application filed November 13, 1915.

Patented Aug. 21, 1917. Serial No. 51,429.

guides 3 at the outer ends of the latter and pivoted upon such pin and projecting up wardly therefrom is a lever. 6 capable of swinging movement. Connected with the lever 6 above the pivot pin 5 is one we tremity of a rod 7 projecting toward the block 4 and having the opposite end thereof secured to the adjacent face of the, block as,

at 8. Suitably secured to the upper edges of the opposite guides 3 are the free extremities of the limbs of a yoke 9 straddling the rod 7 and carrying, at its interconnecting portion, an upwardly projecting arm 10 and formed in the arm 10 adjacent to the upper extremity thereof is an eye 11. Connected with the arm 6 is'one extremity of a chain or wire 12, while trained through the eye 11 in the arm 10 is a ing one end thereof'connected with the lever 6 and the free extremities of these wires or chains 12 and 13 are'conneoted to each other and trained about a sprocket wheel or pulley14 journaled upon a stub shaft carried by the standard of the-adjacent semaphore and operatively connected with the blade of the semaphore. This connection between the blade of the semaphore and the sprocket wheel 14 is such that when the blade is swung to danger position the sprocket wheel is rotated to exert a pull upon the chain 13 and so draw the latter through the eye 11 in the arm 10 and swing the lever 6 about the pivot pin 5 in a direction toward the trackway. In this forward movement of the lever under the action of the chain 13, the chain 12 is slackened and the block 4 slid under the guides 3, 3 to active position. On the other hand, when the blade swings to danger position, a pull is exerted upon the chain 12 and the chain 13 slackened and in this movement of the chains the lever 6 is swung rearwardly or away from the trackway so that a pull is exerted upon the rod 7 and the block 4 drawn away from the adjacent line of rails to inactive position.

In the present instance, the car carried stopping mechanism comprises a vertical section of pipe 15 rigidly secured to the pilot truck of the locomotive and provided at its lower end with a release valve 16 equipped with an outwardly projecting handle 17 adapted to impact against the block 4 when the latter is in active position so that the valve 16 will be opened. The upper end of the pipe 15 is connected with a flexible hose or bag 18 and the latter, in turn, is connectchain or wire 13 hav-y ed through the medium of a with the train line air pipe or brake pipe 20. By means of the flexible section or hose or bag 18, the sections and 16 are enabled to move relatively to each other in the swaying or swinging of the body of the locomotive from side to side, incident to the travel thereof.

In practice, when the signal blade is in dangerposition and the block in active position and a train passes the signal, the handle 17' contacts with the block 4, thereby opening the valve 16 and bleeding the brake pipe or trainline air-pipe with the effect to apply the brakes to the wheels and'bring the train to a standstill.

. I claim: 1

1; In automatic train stopping apparatus, the combination with a trackway, of a pair of guides disposed adjacent to'one line of rails oif the trackWav and arranged at right angles thereto, a block mounted within said guides and capable of sliding movement therein to .-active and: inactive positions, a pivot pin carriedby the outer ends of said guides, a lever fulcrumed on said pin, a connection between said lever and block, means for swinging said lever to slide the block to active and inactive positions, a chain connected to said lever and projecting forwardly therefrom,

nected to the lever and extending rearwardly therefrom, means for operating said chains Copies of this patent may pipe section 19 and a second chain conin reverse directions whereby the lever will be swung and the block actuated to active and inactlve positions.

2. In automatic train stopping apparatus, the combination with a trackway, of a pair of guides disposed adjacent to one line of reverse'directions whereby the lever will be swung and the block actuated to active and inactive positions, a yoke straddling said guides between said lever and block, and an arm projecting upwardly from said yoke and formed with an eye througlrwhich the first-mentioned chain is trained.

In testimony whereofI aiiix my signature in presence of two witnesses.

PERCY M. SPROULE.

Witnesses HENRI SAINT JACQUES, MARIA MATHIEU.

be obtained. for five cents each, by addressing the Commissioner of Patents.

Washington, .D. G. 

